508 



Anthony San Pietro, Leo P. Vernon and Dorothy Limbach 



10. San Pietro, A. , in "Light and Life" (W. D. McElroy and H. B, Glass, 



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11. Tagawa, K. , and Arnon, D. I., Nature, 195, 537 (1962). 



12. Davenport, H. E. , Nature, 199, 151 (1963r 



13. Smillie, R. M. , Plant Physiology, 38 (Supplement) xxviii (1963). 



14. Lazzarini, R. A. , and San Pietro, ~X. , Unpublished observation. 



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